Count Days

Calculate the number of calendar days between a start date and an end date, or shift a date forward or backward by years, months, weeks, and days. Useful for schedules, travel, billing, recurring reminders, and deadline math.

[ MODE: LOCAL ] [ RANGE: CALENDAR ] [ END DATE: TOGGLE ] [ TODAY: ] [ TZ: ]

[ DATE RANGE INPUT ]

START DATE

END DATE

Include end date in total

> enter two calendar dates to count full-day distance • inclusive mode adds the final date to the total

[ ADD / SUBTRACT DATE ]

START DATE

OPERATION

YEARS

MONTHS

WEEKS

DAYS

Repeat calculation

HOW MANY TIMES

> repeat mode applies the same offset again and again • max 50 results

> months and years preserve calendar intent when possible • if the target month is shorter, the result clamps to that month's last valid date

[ FIELD NOTES ]

> Excluding the end date is the standard 'days between' count.

> Turn on end-date inclusion for bookings, leave requests, rentals, or other inclusive ranges.

> This calculator works with calendar dates only, so daylight-saving shifts do not skew the day count.

> Month and year offsets keep the same day when possible, then clamp to the last valid day of the target month.

> Repeated offsets apply cumulatively, so each new result uses the prior result as its starting point.

COMMON USES

Trip planning and hotel stays

Project timelines and delivery windows

Subscription, billing, or contract spans

Recurring reminders, payroll cycles, and renewals

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